DID Resolver

gem 'did_resolver'

require 'did_resolver'

# Resolve a DID using the default resolver
result = DidResolver::Resolver.resolve("did:web:example.com")

if result.error?
  puts "Error: #{result.error_message}"
else
  puts result.did_document.to_h
end

require 'did_resolver'

# Create a resolver with specific methods and caching
resolver = DidResolver::Resolver.new(
  DidResolver::Methods::Web.resolver,
  DidResolver::Methods::Key.resolver,
  DidResolver::Methods::Jwk.resolver,
  cache: true  # Enable default in-memory cache
)

# Resolve a did:key
result = resolver.resolve("did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK")
did_document = result.did_document

# Access verification methods
did_document.verification_method.each do |vm|
  puts "Key ID: #{vm['id']}"
  puts "Type: #{vm['type']}"
end

result = resolver.resolve("did:web:example.com")
doc = result.did_document

# Find a specific verification method
vm = doc.find_verification_method("#key-1")

# Get verification methods for a purpose
auth_keys = doc.verification_methods_for(:authentication)

# Extract public key info
key_info = doc.first_public_key_for(:assertion_method)
# => { id: "did:...#key-1", type: "JsonWebKey2020", format: :jwk, value: {...} }

# Standard domain
resolver.resolve("did:web:example.com")
# => fetches https://example.com/.well-known/did.json

# With path
resolver.resolve("did:web:example.com:users:alice")
# => fetches https://example.com/users/alice/did.json

# With port
resolver.resolve("did:web:localhost%3A8080")
# => fetches https://localhost:8080/.well-known/did.json

# Ed25519 key
resolver.resolve("did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK")

# P-256 key
resolver.resolve("did:key:zDnaerDaTF5BXEavCrfRZEk316dpbLsfPDZ3WJ5hRTPFU2169")

# EBSI jwk_jcs-pub format
resolver.resolve("did:key:z2dmzD81cgPx8Vki7JbuuMmFYrWPgYoytykUZ3eyqht1j9KbrD...")

# EC P-256 key
jwk = { "kty" => "EC", "crv" => "P-256", "x" => "...", "y" => "..." }
encoded = Base64.urlsafe_encode64(jwk.to_json, padding: false)
resolver.resolve("did:jwk:#{encoded}")

# Use default cache (5 minute TTL)
resolver = DidResolver::Resolver.new(
  DidResolver::Methods::Web.resolver,
  cache: true
)

# Custom TTL
cache = DidResolver::Cache.new(ttl: 3600)  # 1 hour
resolver = DidResolver::Resolver.new(
  DidResolver::Methods::Web.resolver,
  cache: cache
)

# Skip cache for a specific resolution
result = resolver.resolve("did:web:example.com", no_cache: true)

module DidResolver
  module Methods
    class MyMethod
      class << self
        def resolver
          { "mymethod" => method(:resolve) }
        end

        def resolve(did, parsed, resolver, options = {})
          # parsed.did    - the base DID
          # parsed.method - "mymethod"
          # parsed.id     - method-specific identifier

          # Your resolution logic here...
          did_document = DIDDocument.new(id: did, ...)

          ResolutionResult.success(did_document)
        rescue => e
          ResolutionResult.error("internalError", e.message)
        end
      end
    end
  end
end

# Register the custom resolver
resolver = DidResolver::Resolver.new(
  DidResolver::Methods::MyMethod.resolver
)